CN106208074A - A kind of boosting and the transformator of power flowcontrol integration - Google Patents
A kind of boosting and the transformator of power flowcontrol integration Download PDFInfo
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- CN106208074A CN106208074A CN201610644487.6A CN201610644487A CN106208074A CN 106208074 A CN106208074 A CN 106208074A CN 201610644487 A CN201610644487 A CN 201610644487A CN 106208074 A CN106208074 A CN 106208074A
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- adjustable
- transformator
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/04—Circuit arrangements for ac mains or ac distribution networks for connecting networks of the same frequency but supplied from different sources
- H02J3/06—Controlling transfer of power between connected networks; Controlling sharing of load between connected networks
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Electrical Variables (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The present invention relates to Automation of Electric Systems, it is specifically related to a kind of boosting and the transformator of power flowcontrol integration, including two-winding transformer, described two-winding transformer includes the primary side winding with adjustable winding and autotransformer, and the vice-side winding with adjustable winding；The adjustable winding in described former limit and the adjustable winding of secondary access power system, as booster transformer and the power flow regulating device of power system.This boosting and the transformator of power flowcontrol integration, be equivalent to seal in an amplitude, the voltage source of phase-adjustable at system head end, and its function is similar to THE UPFC UPFC, therefore the gaining merit of regulation system that can be independent, reactive power flow.Using on-load voltage regulating switch regulation technology, regulative mode is flexible, and reliability is high.Collecting system booster transformer, power flow regulating device are integrated, low cost, and floor space is little.
Description
Technical field
The invention belongs to transmission line of electricity technical field of automation, particularly relate to a kind of boosting and the change of power flowcontrol integration
Depressor.
Background technology
Currently, the electrical network of China is the most gradually to the direction of large-sized unit, supertension, long-distance sand transport and trans-regional interconnection the most deeply
Development, the interconnection of regional power grid makes electrical network popularization, and the skewness of trend can be caused thereupon to weigh.Transmit in trend
Unbalanced extremely serious when, it is possible to can cause a power transmission line near or above its Transmission Constraints edge, and another
Transmission line of electricity has but only reached the sub-fraction of its energy transmission capacity, and it is unreasonable that this not only results in utilizing of equipment, and more having can
Can affect the safe operation of whole system.During the Power Exchange that the transmission line of electricity of interconnection is interregional, it is also desirable to pass through
Control action to trend improves the ability of Power Exchange.Therefore, under this large-scale operation of power networks, pay close attention to and study
One of focus and difficult point be how flexible control system trend, improve line transmission capacity.The most at home and abroad, in system
The power flow regulating means of application have thuristor throw-in and throw-off series capacitor TCSC, phase-shifting transformer PST and THE UPFC
(Unified Power Flow Controller,UPFC)。
In China, the power flow regulating means being most widely used are exactly thuristor throw-in and throw-off series capacitor TCSC, by
Circuit seals in an electric capacity C and changes the equiva lent impedance in circuit, thus regulate trend.Thuristor throw-in and throw-off series capacitor TCSC
Maximum shortcoming is just because having sealed in an electric capacity in the line, thus there is sub-synchronous oscillation problem.Additionally, TCSC device
Floor space bigger.
Abroad, the power flow regulating means being most widely used are phase-shifting transformer PST, be broadly divided into the horizontal phase shifter,
Longitudinal phase shifter and oblique phase shifter.Laterally phase shifter, longitudinal phase shifter only one of which regulated variable, the control mode to trend
Dumb.Oblique phase shifter many employings power electronics control mode pressure regulation, therefore such phase shifter cost is high, reliability is low, no
It is suitable for high pressure, extra-high voltage grid.
THE UPFC UPFC is to utilize power electronic devices switch to seal in amplitude, a phase place in the line all to connect
Continuous adjustable equivalent source, fast response time, control flexibly.But owing to UPFC uses power electronics control mode, improving it
While capacity, installation cost can be greatly improved, and reliability can reduce, thus is also not suitable for large-scale promotion application at present.
The present Research of above-mentioned several typical power flow regulating device, exist regulative mode underaction or cost high,
The problems such as reliability is low.
Summary of the invention
It is an object of the invention to provide a kind of with on-load voltage regulating switch with the two-winding transformer of autotransformer function,
Realize booster transformer and the function of power flow regulating device in transmission line of electricity.Using on-load voltage regulating switch regulation technology, reliability is high,
Collecting system booster transformer, power flow regulating device are integrated, low cost, and floor space is little.
For achieving the above object, the technical solution used in the present invention is: a kind of boosting and the transformation of power flowcontrol integration
Device, including two-winding transformer, described two-winding transformer includes the primary side winding with adjustable winding and autotransformer, with
And the vice-side winding with adjustable winding；The adjustable winding in described former limit and the adjustable winding of secondary access transmission line of electricity, are used as transmission of electricity
The booster transformer of circuit and power flow regulating device.
In the transformator of described boosting and power flowcontrol integration, the autotransformer of described primary side winding is as institute
State the booster transformer of transmission line of electricity, it is provided that the head end voltage of transmission line of electricity.
In the transformator of described boosting and power flowcontrol integration, the adjustable winding in described former limit is on-load voltage regulating switch
One group of tap of the former limit autotransformer low-pressure section connected, described secondary is adjustable, and winding is the pair that on-load voltage regulating switch connects
One group of tap of limit winding；The adjustable winding in described former limit and the adjustable windings in series of secondary access transmission line of electricity, it is provided that described transmission of electricity
The head end of circuit compensates voltage, as the power flow regulating device of transmission line of electricity.
In the transformator of described boosting and power flowcontrol integration, by changing the adjustable winding in described former limit and secondary
The tap switching position of adjustable winding, the head end regulating described transmission line of electricity compensates amplitude and the phase place of voltage, it is achieved to described
Transmission line of electricity is meritorious, the regulation and control of reactive power flow.
Understand summary of the invention for making those skilled in the art become apparent from, technical solution of the present invention and effect are made furtherly
Bright.Above-mentioned boosting and the transformator of power flowcontrol integration, its basic structure is a two-winding transformer.Primary side winding is
One autotransformer, can realize the boost function from low pressure to high pressure, can be as the booster transformer of transmission line of electricity, it is provided that line
The head end voltage on road.Vice-side winding, with one group of tap, is connected by on-load voltage regulating switch, and this part of winding can as secondary
Adjust winding.The low-pressure section of primary side winding also with one group of tap, is connected by on-load voltage regulating switch, this part of winding conduct
Former limit is adjustable winding.The adjustable windings in series of transformer primary side and secondary accesses in transmission line of electricity, composition transmission line of electricity head end
Compensate voltage, the trend of regulation transmission line of electricity.By changing the tap switching position of the adjustable winding of transformer primary side and secondary,
The amplitude of voltage and phase place can be compensated by independent regulation transmission line of electricity head end, thus can independent regulation transmission line of electricity meritorious, idle
Trend.Using ripe on-load voltage regulating switch regulation technology, reliability is high.Collection transmission line of electricity booster transformer, power flow regulating device
Being integrated, low cost, floor space is little.
Beneficial effects of the present invention: the boosting of the present invention and the transformator of power flowcontrol integration, is equivalent at power transmission line
Road head end has sealed in an amplitude, the voltage source of phase-adjustable, and its function is similar to THE UPFC UPFC, therefore can be independent
Meritorious, the reactive power flow of regulation transmission line of electricity.Using on-load voltage regulating switch regulation technology, regulative mode is flexible, and reliability is high.
Integrating transmission line of electricity booster transformer, power flow regulating device, low cost, floor space is little.
Accompanying drawing explanation
Fig. 1 is boosting and the topology knot of power flowcontrol integrated transformer access transmission line of electricity of one embodiment of the invention
Composition；
Fig. 2 is the core structure of one embodiment of the invention single-phase integral transformator.
Detailed description of the invention
Below in conjunction with the accompanying drawings embodiments of the present invention are described in detail.
Following disclosure provides different embodiments or example for realizing the different structure of the present invention.In order to simplify this
Disclosure of the invention, hereinafter parts and setting to specific examples are described, and they are the most merely illustrative, and are not intended to
Limit the present invention.Additionally, the present invention can in different examples repeat reference numerals and/or letter.This repetition is for letter
Change and clearly purpose, the relation between itself not indicating discussed various embodiment and/or arranging.Additionally, the present invention carries
The various specific technique supplied and the example of material, but those of ordinary skill in the art it can be appreciated that other technique should
With property and/or the use of other materials.
Embodiment
The present embodiment have employed following technical scheme, a kind of boosting and the transformator of power flowcontrol integration, including double wrap
Group transformator, described two-winding transformer includes the primary side winding with adjustable winding and autotransformer, and with adjustable
The vice-side winding of winding；The adjustable winding in described former limit and the adjustable winding of secondary access transmission line of electricity, as the boosting of transmission line of electricity
Transformator and power flow regulating device.
Further, the autotransformer of described primary side winding is as the booster transformer of described transmission line of electricity, it is provided that defeated
The head end voltage of electric line.
Further, the adjustable winding in described former limit is the former limit autotransformer low-pressure section that on-load voltage regulating switch connects
One group of tap, one group of tap of described secondary is adjustable winding is vice-side winding that on-load voltage regulating switch connects；Described former limit is adjustable
Winding and the adjustable windings in series of secondary access transmission line of electricity, it is provided that the head end of described transmission line of electricity compensates voltage, as power transmission line
The power flow regulating device on road.
Further, by changing the adjustable winding in described former limit and the tap switching position of the adjustable winding of secondary, regulation
The head end of described transmission line of electricity compensates amplitude and the phase place of voltage, it is achieved, the regulation and control of reactive power flow meritorious to described transmission line of electricity.
The present embodiment mainly passes through one with on-load voltage regulating switch and the two-winding transformer of autotransformer function, reality
Booster transformer and the function of power flow regulating device in existing transmission line of electricity.Its basic structure is a two-winding transformer, former limit around
Group is an autotransformer, as the booster transformer of system.Vice-side winding and primary side winding all with one group of tap, are passed through
On-load voltage regulating switch connects, and is composed in series the compensation voltage of transmission line of electricity head end, as the power flow regulating device of transmission line of electricity.Pass through
Change the tap switching position of the adjustable winding of transformer primary side and secondary, voltage can be compensated by independent regulation transmission line of electricity head end
Amplitude and phase place, thus can meritorious, the reactive power flow of independent regulation transmission line of electricity.
When being embodied as, as it is shown in figure 1, be that the present embodiment boosts and the transformator of power flowcontrol integration shows in dotted line frame
Being intended to, primary side winding is the autotransformer with adjustable tap, and vice-side winding is with adjustable tap, by certain connection side
Formula, the transformator of this integration accesses transmission line of electricity, can realize booster transformer, the dual function of power flow regulating device.
Primary side winding is an autotransformer, can realize the boost function from low pressure to high pressure, as the boosting of system
Transformator, it is provided that the head end voltage of transmission line of electricity.
Vice-side winding, with one group of tap, is connected by on-load voltage regulating switch, this part of winding as secondary adjustable around
Group.
The low-pressure section of primary side winding also with one group of tap, is connected by on-load voltage regulating switch, and this part of winding is made
For the adjustable winding in former limit.The adjustable windings in series of transformer primary side and secondary accesses in transmission line of electricity, forms transmission line of electricity head end
Compensation voltage, regulate transmission line of electricity trend.
By changing the tap switching position of the adjustable winding of transformer primary side and secondary, can independent regulation transmission line of electricity head
The amplitude of end compensating voltage and phase place, thus can meritorious, the reactive power flow of independent regulation transmission line of electricity.
Using on-load voltage regulating switch regulation technology, reliability is high.
Hereinafter parameter each in Fig. 1 is illustrated:
For transmission line of electricity head end, the three-phase voltage before boosting；
For transmission line of electricity head end, the three-phase voltage after the transformer boost that the present embodiment provides；
For transmission line of electricity head end, the three-phase after the transformer series compensation that the present embodiment provides
Voltage；
For transmission line of electricity end, the three-phase voltage before blood pressure lowering；
For transmission line of electricity end, the three-phase voltage after blood pressure lowering.
TsFor the isolating transformer that series compensating voltage is coupled on circuit；
T is the step-down transformer of transmission line of electricity end；
XLEquivalent reactance for transmission line of electricity.
And for the present embodiment proposition collect boosting, power flowcontrol integration each parameter of transformator be explained as follows: by
Three-phase structure in this transformator has symmetry completely, analyzes as a example by A phase.Primary side winding has four stationary contacts, point
It is not A2, A1, A0, X, one is passed through on-load voltage regulating switch adjustable moving contact AM(regulation of ± k level)；Vice-side winding have one quiet
Only contact: a0, one is passed through on-load voltage regulating switch adjustable moving contact Am(regulation of ± k level).
This embodiment integrated transformer mode of connection is as follows:
1. stationary contacts A of primary side winding2、B2、C2It is respectively connected to A, B, C three-phase system voltage
2. stationary contacts A of primary side winding1、B1、C1It is respectively connected to the T of A, B, C three-phase isolation transformersThe head end on former limit.
3. the stationary contacts X-Y-Z ground connection of primary side winding.
4. stationary contacts A of primary side winding0、B0、C0It is respectively connected to system A, B, C three-phase series transformator TsThe head of secondary
End.
5. stationary contacts a of vice-side winding0、b0、c0It is respectively connected to system B, C, A three-phase series transformator TsThe end of secondary
End.
The moving contact A of 6.A phase primary side windingMWith C phase vice-side winding moving contact CmIt is connected.
The moving contact B of 7.B phase primary side windingMWith A phase vice-side winding moving contact AmIt is connected.
The moving contact C of 8.C phase primary side windingMWith B phase vice-side winding moving contact BmIt is connected.
By regulating the moving contact A of the present embodiment transformatorM、BM、CMAnd Am、Bm、CmPosition, can change string mend defeated
The amplitude of the voltage of electric line head end and phase place, such that it is able to change transmission line of electricity head end voltageAmplitude
And phase place, reach to regulate that transmission line of electricity is meritorious, the purpose of reactive power flow.
The Three-Phase Transformer of the present embodiment has symmetry completely, therefore illustrates that its iron core is tied as a example by A phase core structure
Structure.As shown in Figure 2, its basic structure is a two-winding transformer.
Primary side winding has four stationary contacts: A2, A1, A0, X, one is passed through on-load voltage regulating switch adjustable moving contact AM
(regulation of ± k level)；Vice-side winding has stationary contacts a: a0, one is passed through on-load voltage regulating switch adjustable moving contact Am(± k level
Regulation).
A2-X accesses transmission line of electricity low-pressure side input voltage.
A1-X output is after the autotransformer part of the present embodiment transformator is boosted, it is provided that transmission line of electricity head end electricity
Pressure.
The winding N of transformator2=N3。
The regulation progression k, winding N of transformator1And N2Relation, can be designed according to actual needs.
The transformator that the present embodiment proposes:
(1) its boosting principle is the boosting principle of autotransformer.
(2) its power flow regulating principle is:
After this transformer boost and series compensation, the voltage expression of each phase of system is as follows:
Wherein, k1、k2By regulating the position of on-load voltage regulating switch, its size is all positive and negative adjustable.Thus be equivalent to
Transmission line of electricity head end has sealed in an amplitude, the voltage source of phase-adjustable, and its function is similar to THE UPFC UPFC, therefore
Meritorious, the reactive power flow of regulation transmission line of electricity that can be independent.
It should be appreciated that the part that this specification does not elaborates belongs to prior art.
Although describing the detailed description of the invention of the present invention above in association with accompanying drawing, but those of ordinary skill in the art should
Understanding, these are merely illustrative of, and these embodiments can be made various deformation or amendment, former without departing from the present invention
Reason and essence.The scope of the present invention is only limited by the claims that follow.
Claims (4)
1. boosting and a transformator for power flowcontrol integration, including two-winding transformer, it is characterised in that described double winding
Transformator includes the primary side winding with adjustable winding and autotransformer, and the vice-side winding with adjustable winding；Described
Former limit is adjustable winding and the adjustable winding of secondary access transmission line of electricity, as booster transformer and the power flow regulating device of transmission line of electricity.
Boosting the most according to claim 1 and the transformator of power flowcontrol integration, it is characterised in that described primary side winding
Autotransformer as the booster transformer of described transmission line of electricity, it is provided that the head end voltage of transmission line of electricity.
Boosting the most according to claim 1 and 2 and the transformator of power flowcontrol integration, it is characterised in that described former limit
Adjustable winding is one group of tap of former limit autotransformer low-pressure section that on-load voltage regulating switch connects, described secondary is adjustable winding
One group of tap for the vice-side winding that on-load voltage regulating switch connects；The adjustable winding in described former limit and the adjustable windings in series of secondary access
Transmission line of electricity, it is provided that the head end of described transmission line of electricity compensates voltage, as the power flow regulating device of transmission line of electricity.
Boosting the most according to claim 3 and the transformator of power flowcontrol integration, it is characterised in that described by changing
Former limit is adjustable winding and the tap switching position of the adjustable winding of secondary, the head end regulating described transmission line of electricity compensates the amplitude of voltage
And phase place, it is achieved, the regulation and control of reactive power flow meritorious to described transmission line of electricity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610644487.6A CN106208074B (en) | 2016-08-08 | 2016-08-08 | It is a kind of to boost and the integrated transformer of power flowcontrol |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610644487.6A CN106208074B (en) | 2016-08-08 | 2016-08-08 | It is a kind of to boost and the integrated transformer of power flowcontrol |
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| CN106208074A true CN106208074A (en) | 2016-12-07 |
| CN106208074B CN106208074B (en) | 2019-01-29 |
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| CN201610644487.6A Active CN106208074B (en) | 2016-08-08 | 2016-08-08 | It is a kind of to boost and the integrated transformer of power flowcontrol |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106941259A (en) * | 2017-05-05 | 2017-07-11 | 秦伟喆 | A kind of line segment formula three-phase load unbalance adjustment and boosting loss-reducing and electricity-saving device |
| CN108922758A (en) * | 2018-07-09 | 2018-11-30 | 闫福录 | A kind of pluggable transformer of Split type three-phase and replacing options |
| CN112821403A (en) * | 2021-01-09 | 2021-05-18 | 华北电力大学（保定） | Single-phase or three-phase electromagnetic series-connection type power transmission line power flow control topological circuit |
| CN115986752A (en) * | 2023-02-03 | 2023-04-18 | 国网北京市电力公司 | Adjustable voltage source, power distribution system and power adjustment method of power distribution system |
| WO2024051838A1 (en) * | 2022-09-08 | 2024-03-14 | 国网智能电网研究院有限公司 | Voltage amplitude and phase adjustment apparatus and method, and computer device and storage medium |
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| CN103762599A (en) * | 2014-01-25 | 2014-04-30 | 孙崇山 | Transient impedance transformer based on alternating current voltage regulating electronic switch |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106941259A (en) * | 2017-05-05 | 2017-07-11 | 秦伟喆 | A kind of line segment formula three-phase load unbalance adjustment and boosting loss-reducing and electricity-saving device |
| CN108922758A (en) * | 2018-07-09 | 2018-11-30 | 闫福录 | A kind of pluggable transformer of Split type three-phase and replacing options |
| CN112821403A (en) * | 2021-01-09 | 2021-05-18 | 华北电力大学（保定） | Single-phase or three-phase electromagnetic series-connection type power transmission line power flow control topological circuit |
| CN112821403B (en) * | 2021-01-09 | 2023-10-03 | 华北电力大学（保定） | Single-phase or three-phase electromagnetic series type transmission line tidal current control topological circuit |
| WO2024051838A1 (en) * | 2022-09-08 | 2024-03-14 | 国网智能电网研究院有限公司 | Voltage amplitude and phase adjustment apparatus and method, and computer device and storage medium |
| CN115986752A (en) * | 2023-02-03 | 2023-04-18 | 国网北京市电力公司 | Adjustable voltage source, power distribution system and power adjustment method of power distribution system |
| CN115986752B (en) * | 2023-02-03 | 2024-01-23 | 国网北京市电力公司 | Adjustable voltage source, power distribution system and power adjustment method of power distribution system |
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| CN106208074B (en) | 2019-01-29 |
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